diff --git a/transport-native-epoll/src/main/java/io/netty/channel/epoll/AbstractEpollStreamChannel.java b/transport-native-epoll/src/main/java/io/netty/channel/epoll/AbstractEpollStreamChannel.java
index a8ecee555f..3cbfe73550 100644
--- a/transport-native-epoll/src/main/java/io/netty/channel/epoll/AbstractEpollStreamChannel.java
+++ b/transport-native-epoll/src/main/java/io/netty/channel/epoll/AbstractEpollStreamChannel.java
@@ -22,6 +22,7 @@ import io.netty.channel.Channel;
 import io.netty.channel.ChannelConfig;
 import io.netty.channel.ChannelFuture;
 import io.netty.channel.ChannelFutureListener;
+import io.netty.channel.ChannelMetadata;
 import io.netty.channel.ChannelOutboundBuffer;
 import io.netty.channel.ChannelPipeline;
 import io.netty.channel.ChannelPromise;
@@ -51,7 +52,7 @@ import static io.netty.channel.unix.FileDescriptor.pipe;
 import static io.netty.util.internal.ObjectUtil.checkNotNull;
 
 public abstract class AbstractEpollStreamChannel extends AbstractEpollChannel implements DuplexChannel {
-
+    private static final ChannelMetadata METADATA = new ChannelMetadata(false, 16);
     private static final String EXPECTED_TYPES =
             " (expected: " + StringUtil.simpleClassName(ByteBuf.class) + ", " +
                     StringUtil.simpleClassName(DefaultFileRegion.class) + ')';
@@ -130,6 +131,11 @@ public abstract class AbstractEpollStreamChannel extends AbstractEpollChannel im
         return new EpollStreamUnsafe();
     }
 
+    @Override
+    public ChannelMetadata metadata() {
+        return METADATA;
+    }
+
     /**
      * Splice from this {@link AbstractEpollStreamChannel} to another {@link AbstractEpollStreamChannel}.
      * The {@code len} is the number of bytes to splice. If using {@link Integer#MAX_VALUE} it will
diff --git a/transport-udt/src/main/java/io/netty/channel/udt/nio/NioUdtByteConnectorChannel.java b/transport-udt/src/main/java/io/netty/channel/udt/nio/NioUdtByteConnectorChannel.java
index 62dbb9ffd7..cc646934df 100644
--- a/transport-udt/src/main/java/io/netty/channel/udt/nio/NioUdtByteConnectorChannel.java
+++ b/transport-udt/src/main/java/io/netty/channel/udt/nio/NioUdtByteConnectorChannel.java
@@ -44,8 +44,6 @@ public class NioUdtByteConnectorChannel extends AbstractNioByteChannel implement
     private static final InternalLogger logger =
             InternalLoggerFactory.getInstance(NioUdtByteConnectorChannel.class);
 
-    private static final ChannelMetadata METADATA = new ChannelMetadata(false, 16);
-
     private final UdtChannelConfig config;
 
     public NioUdtByteConnectorChannel() {
@@ -175,11 +173,6 @@ public class NioUdtByteConnectorChannel extends AbstractNioByteChannel implement
         return javaChannel().socket().getLocalSocketAddress();
     }
 
-    @Override
-    public ChannelMetadata metadata() {
-        return METADATA;
-    }
-
     @Override
     protected SocketAddress remoteAddress0() {
         return javaChannel().socket().getRemoteSocketAddress();
diff --git a/transport/src/main/java/io/netty/channel/nio/AbstractNioByteChannel.java b/transport/src/main/java/io/netty/channel/nio/AbstractNioByteChannel.java
index cc59b84d8a..7d16ed4ae6 100644
--- a/transport/src/main/java/io/netty/channel/nio/AbstractNioByteChannel.java
+++ b/transport/src/main/java/io/netty/channel/nio/AbstractNioByteChannel.java
@@ -20,6 +20,7 @@ import io.netty.buffer.ByteBufAllocator;
 import io.netty.channel.Channel;
 import io.netty.channel.ChannelConfig;
 import io.netty.channel.ChannelFuture;
+import io.netty.channel.ChannelMetadata;
 import io.netty.channel.ChannelOption;
 import io.netty.channel.ChannelOutboundBuffer;
 import io.netty.channel.ChannelPipeline;
@@ -36,7 +37,7 @@ import java.nio.channels.SelectionKey;
  * {@link AbstractNioChannel} base class for {@link Channel}s that operate on bytes.
  */
 public abstract class AbstractNioByteChannel extends AbstractNioChannel {
-
+    private static final ChannelMetadata METADATA = new ChannelMetadata(false, 16);
     private static final String EXPECTED_TYPES =
             " (expected: " + StringUtil.simpleClassName(ByteBuf.class) + ", " +
             StringUtil.simpleClassName(FileRegion.class) + ')';
@@ -63,6 +64,11 @@ public abstract class AbstractNioByteChannel extends AbstractNioChannel {
         return new NioByteUnsafe();
     }
 
+    @Override
+    public ChannelMetadata metadata() {
+        return METADATA;
+    }
+
     protected class NioByteUnsafe extends AbstractNioUnsafe {
 
         private void closeOnRead(ChannelPipeline pipeline) {
diff --git a/transport/src/main/java/io/netty/channel/socket/nio/NioSocketChannel.java b/transport/src/main/java/io/netty/channel/socket/nio/NioSocketChannel.java
index 32aa311126..891dd476fa 100644
--- a/transport/src/main/java/io/netty/channel/socket/nio/NioSocketChannel.java
+++ b/transport/src/main/java/io/netty/channel/socket/nio/NioSocketChannel.java
@@ -48,7 +48,6 @@ import java.util.concurrent.Executor;
  */
 public class NioSocketChannel extends AbstractNioByteChannel implements io.netty.channel.socket.SocketChannel {
     private static final InternalLogger logger = InternalLoggerFactory.getInstance(NioSocketChannel.class);
-    private static final ChannelMetadata METADATA = new ChannelMetadata(false, 16);
     private static final SelectorProvider DEFAULT_SELECTOR_PROVIDER = SelectorProvider.provider();
 
     private static SocketChannel newSocket(SelectorProvider provider) {
@@ -104,11 +103,6 @@ public class NioSocketChannel extends AbstractNioByteChannel implements io.netty
         return (ServerSocketChannel) super.parent();
     }
 
-    @Override
-    public ChannelMetadata metadata() {
-        return METADATA;
-    }
-
     @Override
     public SocketChannelConfig config() {
         return config;